Former Friends star David Schwimmer will ditch his good guy image to play a Mafia contract killer in a violent new film about Richard 'The Iceman' Kuklinski.

The actor/director, who played nice guy Ross Geller in the hit sitcom will portray Jack Rosethal opposite Ray Liotta's Mafia's boss in The Iceman.

The titular character will be played by Revolutionary Road star Michael Shannon, according to Daily Variety.

Kuklinski claimed to have killed more than 250 people between 1948 and 1986.

Maggie Gyllenhaal will also appear in the film.